Diffraction glasses are an inexpensive & simple way to determine whether circadian blue is emitted by a yellowish or white light.
Di you know where Korrus gets these paper diffraction glasses? I only see some "funny" models with certain patterns instead of a simple linear display of the different spectral components. Thanks for the info.
Di you know where Korrus gets these paper diffraction glasses? I only see some "funny" models with certain patterns instead of a simple linear display of the different spectral components. Thanks for the info.